Report from the LCRIC

By / par Chris Wilson (LCRIC chair)
(Cassiopeia – Spring / printemps 2022)

The Long Range Plan Community Recommendations Implementation Committee (LCRIC) has continued to meet weekly over the past 3 months. Our primary focus has been on developing draft documents for LRP2020 Recommendation #1 (on Land and Consent) and Recommendation #46 (on an Indigenous Engagement Committee), as well as organizing the second in our series of webinars. We are also beginning to work on an LCRIC-focused session for the 2022 CASCA AGM.

Building on our work at the end of 2021, the LCRIC has held significant internal discussions around LRP2020 Recommendation #1, which focuses on issues of land and consent. We have produced a short document that we have passed along to the CASCA Board for their consideration and feedback.

The LCRIC has also had sustained discussions around LRP Recommendation #46, which envisages establishing a new CASCA committee, an Indigenous Engagement Committee. Among the items we are discussing is the scope of this committee, how it should interact with other existing CASCA committees, what types of persons would be appropriate and useful members of this committee, and how to fund the committee’s activities. We aim to develop a draft document with some ideas that we will share with the CASCA Board in the next 3 months.

We have also been working to organize our second webinar, titled “Including Indigenous Voices in Astronomy Education”. This webinar is now scheduled for 4-5:30 pm Eastern Time on Thursday, March 31, 2022 and will be held via zoom. The goal of this webinar is to share with CASCA members ideas and actions that they can use to support Indigenous knowledges, include Indigenist methods, and to be inclusive of Indigenous students in their classes. Panelists include: Jason Bazylack, Samantha Lawler, Ismael Moumen, and Laurie Rousseau-Nepton. There will be time for audience members to ask questions of the panelists. All participants are expected to follow the event’s Code of Conduct and pre-registration is required. An announcement of this webinar was circulated on the CASCA email exploder in mid-March.

Looking ahead, over the next 3 months, LCRIC is planning to meet with the Sustainability Committee and the Graduate Student Committee to discuss LRP2020 recommendations in their areas of interest. Finally, we will continue our initial work on an implementation timeline for the LRP2020 societal recommendations, with a focus on goals over the next 1 to 3 years.

The LCRIC recognizes that transparency and consultation are very important as our community moves forward to implement the recommendations of the LRP. We will be seeking input from a diversity of perspectives, recognizing that astronomy and astronomers exist with a broader societal context. We welcome feedback and comments at any time, via the Public Discussion page or by email to one of the LCRIC members. Communications will be kept confidential if requested.

President’s Message

By / par Rob Thacker (CASCA President)
(Cassiopeia – Spring / printemps 2022)

On Some Difficult Questions for CASCA

I will centre myself often in this dialogue as identity matters, and I want to emphasize that I’m writing to encourage broader thought, these are obviously my personal views on how I believe organizations should function. I may ask some difficult questions, but they are meant to be general rather than focused, and to lead introspection.

That many of you may well find some of statements I make easier to be framed by me as a (hopefully perceived) compassionate and unthreatening white cis-gender man, also helps to position this dialogue. I’ve never considered myself an activist, but I am married to a person who is deaf, who has had to fight for so many things in their life that I can almost remember where the furrows on her brow come from. I also work with many colleagues who consider themselves activists. That simple statement about not seeing myself as an activist perhaps encapsulates my inherent whiteness, namely, to not see myself for what I am.

I wrote a President’s message in 2019 on the close proximity of CASCA to government, the high costs of the projects we are now involved in and the responsibility it places on our community. While one can argue Canada is normally a small player in major international projects, the reality is the size of those projects are becoming massive. I concluded that essay by saying “It’s one thing to say that knowledge from astronomy benefits everyone, but there’s a growing onus on astronomers to make connections that fulfil that promise.

How far have we come?

Each of you will have a different viewpoint and answer. That is the nature of community.

I’ve been asked why it was important to run the leadership panel this past November, and, other than the fact a promise was made to do that, I think it speaks to the fundamental value of dialogue. With CASCA being a (not-for-profit) corporation, ultimate authority and legal responsibility sits with the Board to determine what is appropriate. That said, I think with most of us being used to working in university collegial governance we would expect support for discussion over difficult topics, that is one of the key things universities are meant to do. However, we have a clear organizational dissonance right now, as the Letters Patent for the Society has a distinctly different flavour to a university act, which usually include statements around freedom and respect, for example. To be more explicit, we don’t have a Senate, we don’t have an Appeals Board, and multiple other structures. CASCA simply does not operate under the same principles as most universities.

What about when discussions get heated? Could we have “civility codes of conduct” to avoid offense and discomfort as distinct from equity-driven codes of conduct employed in conference environments? Obviously, this has been a major discussion on campuses for some time now. But despite our differences from a university structure, I strongly feel we should continue to follow CAUT guidelines to resist imposing any such legislation. David Robinson, CAUT Executive Director, has spoken extensively about how while a goal of civil and respectful dialogue is laudable, when policies are put in place to regulate speech and behaviour then free expression can be put at risk. These issues become most prominent during protest and dissent. CAUT usually highlights the 2014 Capilano University protest as an example where the creation of a statue was ruled as harassment of the university President, which in turn was seen as a clear violation of academic freedom and freedom of expression in a follow-on review.

To be clear: CASCA has a moral and legal obligation to ensure its operation is free from discrimination and harassment, but, at least in my view, we cannot enshrine an intrinsic right to never be offended or uncomfortable. As to the standard of this statute, that is a challenge, and one I will admit is very difficult to determine. Legally, we fall back to the reasonable and competent assessment, but from a social justice perspective that can be argued to be insufficient.

Consequently, as someone that works as a union Lead Negotiator, I am (personally) resistant to any policy which intimidates and silences by inappropriate methods of behaviour control that can be used to oppress, as the 2014 Capilano University case shows. Moreover, I wholly admit it is easy for me to say these things as someone that is implicitly a member of an empowered group and there are complicating factors, for example although many of our members have academic freedom, not all do. Arguments between individuals with academic freedom vs those without it can have an inherent imbalance. Please try to be mindful of this issue. Members of CASCA do not all have the same workplace rights.

Above all, I want to remind everyone that without questioning our values we can easily perpetuate dominant ideologies without being aware of it. There is no question that systemic white supremacy is pervasive within academia, even documents on diversity, which may have been written with good intentions, frequently centre whiteness as “normal.” Similarly, we’ve all seen the benefits of dual anonymous reviews in astronomy, we know biases are present.

This winter term I’ve been enrolled in a course “Indigenous Knowledges and Relations” co-taught by Michelle Paul and Benita Bunjun. One of the key questions we are asked as students is a moral one, namely: “Could you learn all the material in this course and still be someone that doesn’t value Indigenous Knowledges and actively works against them?” the answer is obviously that yes, you could. Why would someone? From self-interest, to systemic bias, to conscious racism we can name different possibilities. Education is but one part of a broader issue – indeed I’m currently working with Reconciliation Education to put this in place for the current and future CASCA Boards – but we have to fully process the moral and ethical questions that are implicit within that knowledge.

All of this discussion has been building to highlight one key fact about how we respond to ethical questions: it is ultimately an individual reaction. CASCA can make ethical statements about what it supports as a Society, but it is down to individual members to take those statements and incorporate them in their actions. Not everyone will come to same conclusions, we know that individuals in communities have different viewpoints. Nonetheless, I feel the single most important recommendation in the LRP is that every Canadian astronomer make a personal commitment to inclusion and reflect that in their personal ethics and values.

With that I call on everyone in the Society to be welcoming, generous and open. We are a community that is focused on education. When we argue, make it about learning, rather than mere winning.

Astronomy is important, but we don’t make the world a better place by discovering things about the universe. We make it a better place by truly sharing that discovery with all the people that make it possible, and working together with respect and true partnership.

Coalition Update

Over the past few months Coalition activities have focused strongly around the Square Kilometer Array. As many of you are aware the project continues to move ahead rapidly, please refer to the excellent updates being provided by Kristine Spekkens and the AACS. The cooperation agreement has been a great way to keep Canadian participation moving forward, but it is clear we need to signal a clear intent to the project to shift to full participation before the agreement ends in March 2023. With the agreement only having been signed last November it might seem unusual to have to be back discussing the issue with the Government so quickly, we are mindful of that issue!

I want to express a personal note of thanks to all the members of Coalition that have participated in the many meetings we’ve had in this first quarter. The community should be aware that some of our industry partners support the Coalition and participate in briefings despite not necessarily being involved in construction of a given project, in that sense the Coalition is a true partnership. That is an important and valuable interrelationship. However, I am most thankful to Kristine Spekkens for her amazing efforts in support of education around the SKA and contributions to discussions with key decision-makers.

I’m delighted to say that these meetings have gone well so far. We’ve been able to address many questions about the project and how it fits with several different Government priorities. I am hopeful that we will indeed see a commitment to the project in the time frame that the SKAO needs. It would be a tragedy if the cooperative agreement ended up becoming an off-ramp for our participation.

So long…

I will be stepping down as Interim President at the AGM as I need to lead what will likely be a very difficult negotiation for my fellow faculty members at SMU. As I write this message, I am quite literally minutes away from giving another faculty update. Juggling responsibilities since January has been a headache! Bylaw 9.1 allowed me to work in this position from last August until the next round of CASCA elections, and those will be soon upon us. We are diligently working to prepare a slate of nominations and I am happy to say we are over half-way there at this point, nominations will be presented soon.

I want to thank everyone in the Society for the conversations we’ve had over the past few months, and all the time and work you have committed to the Society, especially those serving on committees and/or the Board. I also thank our staff, Jessica and Don for all the great help they have provided, and Joanne for her continued work as Editor of Cassiopeia.

It has been an honour to serve you all.

My parting thought to each of you: Be gentle with yourself.

Rob

BRITE-Constellation Mission Update

By / par Gregg Wade (on behalf of the Canadian BRITE Team)
(Cassiopeia – Spring / printemps 2022)

BRITE-Constellation is an international space astronomy mission consisting of a fleet of 20x20x20 cm nanosatellites dedicated to precision optical photometry of bright stars in two photometric colours. The mission continues in full science operations, with 38 datasets available in the public domain from the BRITE public archive. As of April of 2020, all data is made public as soon as decorrelation is complete, with no proprietary period.

The BRITE mission is a collaboration between Canadian, Austrian and Polish astronomers and space scientists. The Canadian partners represent University of Toronto, Université de Montréal, Mount Allison University, and Royal Military College of Canada. The mission was built, and the Canadian satellites operated by, the University of Toronto Institute for Aerospace Studies Space Flight Lab (UTIAS-SFL). The Canadian Space Agency funded the construction of the Canadian satellites, and continues to support their day-to-day operations.

Operations

There are five BRITE satellites in the Constellation, which work together to obtain well-sampled, long term continuous (~6 months) light curves in both red and blue band passes across a variety of sky fields.

As this issue of Cassiopeia went to press, the assignments of the BRITE nanosats were:

  • BRITE Toronto (Canada): This satellite observes with a red filter. It is currently observing the Vel-Pup VIII field. (As indicated by the roman numeral, Vel-Pup is a BRITE legacy field being observed for the 8th time.
  • BRITE Lem (Poland): Lem observes with a blue filter, but is currently idle due to unresolved stability issues.
  • BRITE Heweliusz (Poland): Heweliusz observes with a red filter. It has recently finished observing the Orion VIII field and is being set up on the Cru-Car IV field.
  • BRITE Austria (Austria): BRITE Austria observes with a blue filter. It has recently completed observing the Orion VIII field.
  • UniBRITE (Austria): Currently out of order.

The BRITE Constellation observing program is currently set through mid-2022. Details of the observing plan will be available on the BRITE photometry Wiki page.

Recent Science Results

“A study of stochastic photometric variability in the winds of Galactic Wolf-Rayet stars” (Lenoir-Craig et al., ApJ 925, 79)

In order to explore how the ubiquitous short-term stochastic variability in the photometric observations of Wolf-Rayet (WR) stars is related to various stellar characteristics, we examined a sample of 50 Galactic WR stars using 122 lightcurves obtained by the BRIght Target Explorer-Constellation, Transiting Exoplanet Survey Satellite and Microvariability and Oscillations of Stars satellites. We found that the periodograms resulting from a discrete Fourier transform of all our detrended lightcurves are characterized by a forest of random peaks showing an increase in power starting from ~0.5 day-1 down to ~0.1 day-1. After fitting the periodograms with a semi-Lorentzian function representing a combination of white and red noise, we investigated possible correlations between the fitted parameters and various stellar and wind characteristics. Seven correlations were observed, the strongest and only significant one being between the amplitude of variability, α0, observed for hydrogen-free WR stars, while WNh stars exhibit correlations between α0 and the stellar temperature, T, and also between the characteristic frequency of the variations, νchar, and both T and v. We report that stars observed more than once show significantly different variability parameters, indicating an epoch-dependent measurement. We also find that the observed characteristic frequencies for the variations generally lie between -0.5 < log n < 0.5, and that the values of the steepness of the amplitude spectrum are typically found in the range -0.1 < log g < 0.5. We discuss various physical processes that can lead to this correlation.

BRITE orbital-mean magnitudes of WR24 from the 36-Car-II field as a function of the Heliocentric Julian Date, after subtraction of the median, showing the stochastic photometric variability of this star.

Conferences, Resources, and Social Media

Conferences

The BRITE team does not plan to host any conferences at this time.

Resources

The BRITE Public Data Archive, based in Warsaw, Poland, at the Nikolaus Copernicus Astronomical Centre, can be accessed here.

The mission Wiki (including information on past, current and future fields) can be accessed here.

BRITE Constellation is on Facebook, at @briteconstellation

The BRITE International Advisory Science Team

The BRITE International Advisory Science Team (BIAST), which consists of BRITE scientific PIs, technical authorities, amateur astronomers, and mission fans, advises the mission executive on scientific and outreach aspects of the mission. If you’re interested in joining BIAST, contact Dr. Catherine Lovekin, the chair of BEST.

Square Kilometer Array (SKA) Update

By / par Kristine Spekkens (Canadian SKA Science Director) and the AACS
(Cassiopeia – Spring / printemps 2022)

Artist’s impression of the SKA, combining elements from South Africa and Australia from left to right in the image. Photos of real hardware have been blended with realizations of the future SKA antennas. Image credit: SKA Observatory.

The SKA project continues to develop rapidly, with the construction phase for SKA Phase 1 (= SKA1) now well underway. The SKA will deliver a range of scientific, technical, and societal benefits, with the latter framed through the lens of the UN Sustainable Development Goals. In particular, the project is committed to building partnerships with Indigenous and local communities at the remote sites where the dishes and antennas will be located. The SKA Construction Proposal and Observatory Delivery Plans detail the project science drivers, technical requirements and anticipated broader impacts, SKA Prospectus summarizes these aspects, and the SKA Canada website gives up-to-date Canada-specific information.

SKA1 construction is staged into “Array Assemblies” (AA’s). The first 6-station array for SKA1-Low in Australia and 4-dish array for SKA1-Mid in South Africa (= AA0.5) are planned for 2024, science verification observations with the first scientifically competitive arrays of 64 SKA1-Low stations and 64 SKA1-Mid dishes (= AA2) are set to begin in 2026, and operations readiness reviews for the telescope design baselines (= AA4) are expected by 2028. Nine months into the construction phase, construction tender and procurement is a project office focus, with over two dozen contracts now awarded to SKA Member States.

Significant progress towards securing long-term commitments to the SKA Observatory (SKAO) by partner countries have also been made in recent months. In January, Switzerland became the first country to accede to the SKAO Convention as a Member State, joining the seven founding Member States Australia, China, Italy, the Netherlands, Portugal, South Africa, and the United Kingdom. The eight current Member States are responsible for project governance, with voting rights on the SKAO Council.

Project partners that are not SKAO Members are designated as SKAO Council Observers, and are witness to SKAO Council meetings. Given Switzerland’s recent accession to the SKAO Convention, eight Observer countries remain: Canada; France; Germany; India; Japan; South Korea; Spain; and Sweden. Many Observers are completing their internal processes to become Member States and gain governance rights. Since October 2021, the SKAO has signed short-term cooperation agreements with research institutions in Canada, France, India, and Sweden to allow for the continued technological and scientific participation of these partner countries until they make long-term participation decisions and complete related processes.

The cooperation agreement between NRC and the SKAO allows Canada’s scientific and engineering communities to continue participating in the project — most notably in the delivery of the AA0.5 SKA1-Mid correlator developed by NRC-HAA and industry partner MDA — while membership in the SKAO is given full consideration by the federal government. Canada’s long-term participation in the SKA requires a commitment to construction and operations beyond the cooperation agreement, and this commitment is needed well before the agreement expires in early 2023 to maintain our leading role in SKA1-Mid correlator work. The Coalition for Canadian Astronomy is hard at work to raise awareness of the requisite governmental decisions and timelines.

There are a number of ways in which Canadian astronomers can get involved in the SKA. For example, SKA Science Working Groups are accepting new members, and there are regular calls for participation in SKA Science Data Challenges. Material from the recently completed SKA Regional Centre Training Events and an upcoming special session on artificial intelligence in radio astronomy at the European Astronomical Society Annual Meeting also provide opportunities to prepare for the massive data streams that the SKA will generate.

Now that the construction phase has begun a significant ramp-up in staffing across the project is also underway, and many scientists, engineers, software designers, and support and administrative personnel are being hired. Individuals from all nationalities are welcome to apply. Those interested should keep an eye on the SKAO Recruitment Portal, which includes a “job alert” tool to set up personalized emails filtered by field of expertise, location, duration, and employment type.

For more information and updates on Canada and the SKA: